DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Removed seborrhoeic keratosis (second of 2 images). Scar on the head of a 65 year-old male patient after the removal of a seborrhoeic keratosis (or wart). Seborrhoeic keratoses are skin growths caused by an overproduction of keratin, a protein largely found in the outer layer of the skin. Their appearance may vary from flat dark brown and rough patches to small wart- like protrusions (as here) covered with a greasy crust. Seborrhoeic keratoses are harmless but, if unsightly, may be removed by surgery. In this case it was removed by curette cautery (burning with heat). See photo M190/058 of this seborrhoeic wart before surgery.
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